Which is the correct Lewis dot structure of NH2?

H-N-H

H-N-H

A.

B.

N-H-H

H-N-H

c.

D.

•H-N-H.

=.

ОА. А

OB. B

Ос. с

OD

D

OE. E

An unidentified compound contains only phosphorous and fluorine, meaning we could write its formula as PxFy. Heating 0.2324 g of the compound in a 378-mL container converted all of it to gas with a pressure of 97.3 torr at 77°C.

Which of the ionic compounds shown below will be soluble in water? which of the ionic compounds shown below will be soluble in water? ag2co3 agcl fe (oh) 3 na2so4?

The US Environmental Protection Agency (EPA) places limits on the quantities of toxic substances that may be discharged into the sewer system.

what tool do you need to use to find temperature of hot chocolate a meter stick b stopwatch c balance d graduated cylinder e beaker f thermometer

A 62.6-gram piece of heated limestone is placed into 75.0 grams of water at 23.1°C. The limestone and the water come to a final temperature of 51.9°C. The specific heat capacity of water is 4.

Is sidewalk cement an element or a compound?

1.4 Explain why it is important to support individuals to challenge information about services that may present a barrier to participation

Which describes energy changes during nuclear fission? A very large amount of energy is produced from a tremendous mass. EEUU A very large amount of energy is produced from a very small mass. G .

A 0.75mol calcium carbonate (CaCO3) pellet has what mass?

The pH of the acid in the stomach is 2. When a person has heartburn, the acid in their stomach is coming up the esophagus (lower throat) and burning the lining of the esophagus. Why would a person take an Alka Seltzer tablet for heartburn?